Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userStudy of the morphological variability of reproductive organs of some species Hypericum genus in Syria
دراسة التنوع الشكلي للأعضاء التكاثرية لأنواع من جنس العرن Hypericum في سورية
1170
1 11
0
(
0
)
Added by
Damascus University ورقة بحثية
Publication date
2005
fields
Biology
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
أظهرت نتائج دراسة الصفات الشكلية لأجزاء الزهرة و الثمرة و حبات الطلع و البذور لأنواع من جنس العرن Hypericum الفصيلة clusiaceae وجود اختلافات شكلية مهمة بين الأنواع المدروسة و من ثم يمكن اعتبار المعيار الشكلي معياراً أساسياً يعتمد عليه للتمييز بين أنواع جنس العرن المدروسة.
The results of studying the morphological characteristics of the flower, fruit, pollen grains, and seeds between some of Hypericum genus species, show that there are relevant morphological differences among the studied species, which can be considered as taxonomical criteria for distinguishing the studied species of Hypericum genus from each other.
References used
Barenes, J; Linda,A; Anderson,J; Philipson, D.,(2001). St Jones wort (Hypericum perforatum L.): A review of its chemistry, pharmacology and clinical properties ,journal of pharmacy and pharmacology ,Brunswick square ,London P583-600
Chrubasik, R; Basil,D .Roufogalis.,(2000). Herbal medicinal products for the treatment of pain ,LismoreNSW2480,Australia, P144-151
Mouterde, P., (1970). Nouvlle Flore du Liban et de la Syrie ,Tome II Dar el- Machreq- Bayrouth.P519-529
rate research
Read More
The results of studying of histological structure of leaf and stem , stomata
patterns, the shape and size of stomata and the shape of epidermis cells and its
walls between some of hypericum genus spceis (family clusiaceae), show that
there are rel
evant anatomical differences among the studied species, which can
be considered as taxonomical criteria for distinguishing the studied species of
Hypericum genus from each other.
At this study, two species of genus Equisetum L. have been recorded, that they were: Equisetum telmateia L. and Equisetum ramosissimum Desf.
E. ramosissimum Desf. was recorded for the first time in Lattakia.
The morphological features were used to
separate two species: ( number of the scaly leaves in the node area, shape of the sheath, and number of its teeth, number of the grooves at the stem, length of the strobilus and its color, length of the lateral branches).
This study showed that: the spores had three coats, the exosporium rounded by the
spore like bars with a wide terminal that called: elaters.
Also showed obvious difference in measurements the strobilus and the shapes
of sterile and fertile stem.
At this study, two species of genus Equisetum L. have been recorded, that they were:
Equisetum telmateia L. and Equisetum ramosissimum Desf.
E. ramosissimum Desf. was recorded for the first time in Lattakia.
The morphological features were used to
separate two species: ( number of the scaly
leaves in the node area, shape of the sheath, and number of its teeth, number of the grooves
at the stem, length of the strobilus and its color, length of the lateral branches).
This study showed that: the spores had three coats, the exosporium rounded by the
spore like bars with a wide terminal that called: elaters.
Also showed obvious difference in measurements the strobilus and the shapes
of sterile and fertile stem.
Ephedra is a dioecious, drought- and frost-resistant, perennial, evergreen shrub
with high medicinal value due to its content of ephedrine alkaloids. It became quite clear throughout
referential studies that this significant medical plant which is spontaneously widespread in Syria and there
have been an increased international demand on it hasn’t been studied yet.
This investigation was carried out at the Laboratory of Biotechnology at
General Commission for Scientific Agricultural Research (GCSAR), during the
season 2010-2011. The aim of this research was to study the genetic diversity
among twenty individ
ual plants of seven species and to determine the degree of
genetic similarity using the technique ISSR (Inter Simple Sequence Repeats)
and 10 primers were used for this purpose. All primers proved their
effectiveness in showing polymorphism between the studied species, primers
gave a total 195 allele with a polymorphic percentage 100%. The number of
bands for each primer varied from a minimum of 12 bands for the primer
(ISSR-4) to a maximum of 27 bands for the primer (ISSR-862) in an average of
19.5 bands for each primer, cluster analysis and Dendrogram showed the
highest degree of genetic similarity between accession A.leucoclada1 and
A.leucoclada2 (0.64), while it was low between species A.leucoclada3 and
A.glauca2 (0.10). Results showed vast genetic diversity among the studied
species.
suggested questions
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
